#include "stdio.h"

int main(){
    char s1[80],s2[40];
    int i=0,j=0;
    scanf("%s",s1);
    scanf("%s",s2);
    while(s1[i]!='\0') i++;
    while(s2[j]!='\0') s1[i++]=s2[j++];
    s1[i]='\0';
    printf("%s",s1);
    return 0;
}